What does it mean ”if you need to get s12/s22 curve, please exchange the tx/rx port manually”? is it easy to do?

To change the TX/RX port simply unscrew the connection cable from the upper port on the NanoVNA and reconnect it to the lower port.

Will the unit be the 3.4 if i order it now?

Yes, it is 3.4 version, if you order it now

I read in description "900 mhz - enable extended firmware." what does this mean? does it cost extra?

As I understand it, you can extend the range of the device by a firmware update. But there is a resulting decrease in performance. It’s a free update if you so choose. Wayne N4EYZ

What connection type does the battery charger use?

This is an add-on to the other answers that may prevent damage. Quote from specs. on this product page: "maximum charging current 0.8A" In other words, this may get damaged if more than a 1 amp USB charger is used.

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SEESII Nanovna-H Vector Network Analyzer,Upgraded HW3.7 9KHz-1.5GHz MF HF VHF UHF Antenna Analyzer, Measuring S Parameters, Voltage Standing Wave Ratio,Phase,Delay,Smith Chart,Support Data Storage

Product ID: 171114193

💾MicroSD data storage support

📊2.8-inch touchscreen display

📶9KHz-1.5GHz wide freq range

328.64 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📡 Unlock the full spectrum of antenna mastery with SEESII Nanovna-H!

ALL INCLUSIVE PRO KIT - Includes cables, calibration kit, USB-C cables & lanyard in a sleek package
SEAMLESS DATA MANAGEMENT - Save and export test data via MicroSD & NanoVNASaver software for PC/Android
PRECISION MEETS PORTABILITY - Compact 7.1oz design fits your tech toolkit anywhere
NEXT GEN FREQUENCY ALGORITHM - Enhanced si5351 chipset delivers up to 1.5GHz accuracy with metal shielding
COMPREHENSIVE ANTENNA ANALYSIS - Measures S-parameters, SWR, phase, delay & Smith chart for pro-grade insights

The SEESII Nanovna-H HW3.7 is a cutting-edge vector network analyzer designed for professionals and enthusiasts alike. Covering a broad frequency range from 9KHz to 1.5GHz, it features a crisp 2.8-inch touchscreen, advanced frequency algorithms with metal shielding for enhanced accuracy, and supports comprehensive antenna measurements including S-parameters, SWR, phase, and delay. Its built-in MicroSD slot and compatibility with NanoVNASaver software enable effortless data storage and analysis. Lightweight and portable, it comes with a full accessory kit, making it an essential tool for electronics engineers, amateur radio operators, and DIY radio hobbyists aiming to stay ahead in antenna performance testing.

Specifications

ASIN	B08132DJLS
Batteries	1 Lithium Ion batteries required. (included)
Best Sellers Rank	#29,322 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Spectrum Analyzers
Date First Available	November 5, 2019
Item Weight	7.1 ounces
Item model number	NanoVNA-H
Manufacturer	Seesii
Package Dimensions	5.24 x 3.66 x 2.13 inches

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328.64 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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